Screw machine stock stop

Details Screw machine stock stop Screw machine stock stop

1998-12-29

1999-10-19

Briggs, William

Turning

Lathe

Attachment

82126, 82153, B23B 336

Patent

active

059670088

ABSTRACT:
A stock stop for screw machines and the like for determining bar stock positioning and which is capable of sensing short stock. The stock stop includes a housing affixed to the machine tool having a slidable sleeve in which a threaded stop is adjustably positioned. A spring biases the sleeve and stop toward the advancing bar and the sleeve is displaced to a stop position by the advancing bar stock. Motion multiplying means multiply the sleeve movement upon engagement by the bar stock to actuate a proximity switch indicating proper advancement of the bar stock and permitting continued machine tool operation. As the components of the stock stop are encased and protected against contamination, a high degree of reliability is attained while providing accurate machine tool control with respect to the presence of adequate bar stock for machining.

REFERENCES:
patent: 4187748 (1980-02-01), Evans
patent: 5033339 (1991-07-01), Parker
patent: 5642560 (1997-07-01), Roote et al.
patent: 5676031 (1997-10-01), Manning
patent: 5765448 (1998-06-01), Martelli

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